Ransburg 9040, Руководство по обслуживанию

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9040 Low Voltage Control Unit Kit- Maintenance
MAINTENANCE
ROUTINE PREVENTIVE
MAINTENANCE
In general, little maintenance is necessary to
ensure proper operation. It is important, however,
to keep the interior of the unit clean and free from
moisture or foreign material. For this reason:
• Keep the exterior of the unit free from
dust accumulation.
•
Always clean the exterior prior to accessing
the interior.
•
Access the interior only to perform mainte-
nance or repair.
3. Disconnect the low voltage cable and
connect one lead of the ohmmeter to the
ground stud and the other to the center pin of
the low voltage cable socket on the control unit.
If the ohmmeter reads greater than 25 ohms,
repair the internal connections between these
points (green wires from 1TB-GROUND TO
1GND (see Figure 10) and from 1TB-GROUND
to center pin of low voltage cable socket).
NOTE
>
In the control unit, ground is passed
from the ground stud to the chassis via
the front panel screws. Ensure the front
panel screws are securely fastened
and repeat step 3 before searching for
faulty internal connections.
TROUBLESHOOTING
Ground Test Procedure
Equipment Required: Ohmmeter - to
measure resistance
If shocks or sparks are noticed at any point in
the spray system, immediately turn off the
control unit and check the complete system for
proper grounding. Proper grounding of the
applicator system can be verified as follows:
1. Ensure that the clamp of the Ground Wire
Assembly is connected to true earth ground.
The resistance between the clamp and a known
earth ground should read less than 25 ohms.
2.
Place one end of the ohmmeter on the
clamp of the ground wire assembly and the
other end on the control unit ground stud. If the
ohmmeter reads greater than 25 ohms replace
the Ground Wire Assembly.
NOTE
>
On automatic applicators, ground is
passed to the cable by the connection
on the remote cascade.
27
CP-11-01